Wall cleaning attaclment



April 29, 1941. s. w. MOYER WALL CLEANING ATTACHMENT Shee ts-Sheet lFiled Aug. 15, 1938 In yen for George W Mayer April 2 14L (5. W. MOYERWALL CLEANING ATTACHMENT Filed Aug. 15, 1958 2 Sheets-Sheet 2 Fig. 6

Inventor George WI Mayer Md Y 7/ Rita rues Patented A t. 2s, lhtlsrnrss' PATENT orrice WALL CLEANING lir'rAcnMuNr George W. Meyer,lPortland, Greg. Application August 15, 1933, Serial No. 224,847

1 Cluim. (cl. lie-=1) My invention has for its object the cleaningofkalsomined, or papered surfaces, such as interior walls and ceilings.

Various methods of removing dry dirt and dust from interior wallsurfaces have been tried, such as wiping the surfaces with dry cloths,or other fabricated substances to which the line dust particles removedfrom the wall will cling. These means have, however, not beensatisfactory, since they either removed only part of the dirt, leavingthe walls streaked and smeary, or, at best, cause loosened from the wellsuriece so that the in duced suction may seize them and carry them ohand the suction applying means must he adopted to perform its worlremciently. f

- l uttoln my object by an implement uttachehle to a suction producingdevice, for example, it soculled "vacuum cleaner. My attachmentcomprises a hollow head to which is emred o. cleandoe pad of softsponge-like material, for ex ample sponge rubber, of substantialthickness. The cleaning pad is smiled, to a rigid heel: by which the padis firmly securedin the open face of the head. Air ducts extend from theexterior face of, and thru the pad and its heck. The securing of the padby its heel: to the head so that the hody oi the pad is located entirelyoutside oi the head is on essential feature of my invention. Thisarrangement prevents any compression of the pad=body longitudinally, andthus prevents compression 01 its sir ducts, as would result if insertedin the head oi my attachment. It is essential thot the olir ducts oi thepad he hept fully open, otherwise the device will not wort: emcieritly;for the pulling of the dust wiped ed the well surface thru the pad andinto the head, and thence to the dust-bar oi the vacuum cleaner elementcan only heefiectively accomplished-by providing the cleaning pad withair ducts oi predetermined, ample diameter, and essurinuthot ull oi themwill remain fully open in the use oi the cleaning uttachment. if in theuse of my uttnchment the air ducts of the cleenlne paddle in pertclosed, the portlonoi the pad in which such closing occurs is'lncepuhleof pulling the loosened dust 0d the well suriece end streehs oi dust notremoved would lnevitehly result.

The. discontinuous wall sections of the cells lying in the working faceof the sponge-like pad of my attachment function similarly to the interwoven threads of a wiping cloth. The pad first loosens the dust. andthe dust loosened is then removed from the wall surface by the suc-'tion induced in my attachment. A series of sponge-like pads may beprovided, which may be interchangeably used in the headaccdrding to thecharacter of the wall-cleaning work to he done.

in order to do the cleaning ot the wall surface well all areas should begone over several times, similar y as a, painter would so over the samesurfaces to assure an even application of paint.

Further details of my invention are hereinafter described with referenceto the accompanying drawings in which,

Fig. l is a perspective assembly view of my implement; I

Fig. 2 is a perspective view of the abrasive pad or member removed fromthe head in which held;

Fig. 3 is a diagrammatic end elevation of the.

said abrasive member;

Fig. d is u transverse section taken on the plane designated 3, l, ii inFig. 1;

f le. ii is a longitudinal section token on the plane designated h, it,ll, in Fig. 1; end

his. e is e, similar section as Fig. 5, showing it difierent urrancementoi the sin-ducts of the ehrasive pad thun shown in Fig. 5.

A hollow heed e is edapted to have removably secured therein a pad ofsort sponge-like ma= terial d, ofsuhstential thickness for which Epreierebly use sponge rubber. The pad c is provided with a stifi Touchit made of heavy canvas, leather, or other moterial found suitable soits to give the pad sumcient firmness, and provide the means foriastenine the pad to the head and so thnt the hody of the pad will belocated outside the head. The leach of the pad is provided with Asymmetricully erranged sir ducts c which, we in.-

dlcated by d, extend through the pad to its work ing iece e. The head eis udepted to provide on air-chnmher i, end the air ducts c of the leechh, and oi the pool at (d or it) must he armored so no to connectsuhstuntislly the entire area oi the worlrlue isce c or the pad with thesir-= r 3 i We in the common vacuum cleaner is to be attached to theneck k of the head 2.

The number of air-ducts, as d or d, provided in the pad a, and therequired internal diameter of said air-ducts may be varied as deemedmost emcient for work on the wall surface to be cleaned. It is essentialthat the air ducts, d or d, b arranged sufliciently close together so asto assure that the particles of dust as dislodged from the wall surfaceby the pad (1 will be drawn through th air-ducts into the air-chamber Z,and thus removed by the suction providing means attached to the head e.

I have found it best to provide several pads as a, which may beinterchangeably secured in the head e; and in that way the number ofair-ducts provided in the pads respectively, and the internal diameterof the air-ducts may be so designed as to accomplish the most efiicientcleaning of particular wall surface.

The head e is preferably made of metal. This head may be made in theform of a box-like structure open along one side, and the bottom as seenin Fig. 4, and having a detachable side cover-plate f. This cover-platef is held in place i at one end by a lip e integral with the head 2,

and at the other end by a screw g threaded into an inturned wall portionof the head. The lower wall portions of the head 6 are bent inward as ath, Figures 4, 5, and 6, to form a peripheral flange, and the cover-platef has a similar flange 2' (see Fig. 4). When the cleaning pad 11 isfastened to the head e, the flanges h and i engage a peripheral groove1' (see Fig. 3) provided in the edges of the stiff back i) of the pad aand hold the pad firmly in place, with the body of the pad locatedentirely on the outside of the traction of the air ducts extending thruthe pad body. Removal of the cover-plate permits the back of the pad ato be slid out of the head e. In use, the fixture it is connected by ahose to suitable means for creating suction, and the pad 4: is movedwith a rubbing action over the surface of the wall or ceiling to becleaned. The pad a loosens the dust film from the wall surface, and thesuction produced in the chamber 1 of the head then draws the dustparticles through the air-ducts of the pad and its back into thechamberl, and thence through the hose connection to a suitable dust bag orreceiver common to ordinary vacuum cleaners. v The foregoing descriptionof my invention merely describes details in construction which I foundconvenient, but it is to be understood that I do not limit myself to anyparticular detail excent as essential to the principle of my invention.

I claim: A wall-cleaning attachment comprising, a hollow headconstituting a suction chamber, said head being connect-able to a vacuuminducing means,

and having an open face, a-sponge-like resilient brushing .pad ofsubstantial thickness and having a plane outer face, a rigid back pieceto which said pad is firmly attached, said back adapted to be insertedinand providing a substantially air-tight closure for said open face ofthe head, said pad and its said back provided with concentric,continuous suction ducts of substantial cross section constitutingclear, constantly open dust passageways extending through said pad andits back and into said open suction able, and grooves adapted to receivesaid holding flanges provided on the perimeter of said back.

GEORGE W. MOYm.

